Heater for automobiles



DeC. 10, 1929. 1, J, SUNDAY 1,738,850

HEATER FOR AUT OMOB I LES Filed Sept, ll, 1925 hthhllltlt ltltapplication tiled September '.lhis invention relates generally toheaters tor automobilesand consists oit certain novel teatures oftconstruction, combinations and y arrangements ot partsas will bemoreltully t described and particularly pointed out in the appendedclaims.

lln theaccompanying drawing: n

lligure l.is a fragmentary side elevation ot a motor vehicle with aheater embodying Y l@ my invention attached thereto;

Figure 2 is an enlarged vertical longitudinal sectional view through theheater;

ligure 3 is a cross sectional view taken on the line 3 3 ot higure 2,

Referring now to the drawing, the numeral l. designates an exhaustconduit ot an automobile having a section 2 that preferably constitutesthe shell or casing oit my heater. its shown, this section 2 preterablyhas a larger lfm diameter than the exhaust conduit ordinarily providedand is preferably termed ot several lengths ol2 tubing which are joinedtogether.. ln order that tresh air trom the atmosphere may be heatedthoroughly by the exhaust lll gases passing through the conduit lwithout building up bach pressure on the engine, l preterably provide asuitableshell that has a section 3 located within and preferablyconcentric with the shell section 2. .Als shown, l@ the torward end otthis section 3/ is connected to a tube t that extends through the shellsec-i tion 2 and terminates adjacent to the usual tan 5 ot the engine,while the rear end ot the section 3 is connected to a tube b thatextends through the shell section 2 and leads to a suitable register 'i'located preterahly in the lloor d ot the automobile. i

ln use, the air trom the atmosphere will pass through the tube l intothe shell 3 where it will be heated thoroughly by the exhaust gases4assing through the shell section 2 and will t en pass upwardly throughthe tube 6 to the door register 7.

liti

ltd

lhus, from the foregoing description, it

M will be apparent that l ave provided an extremely simple -torm otheater that is composedot a minimum number of parts lwhich maymanutactured at a comparatively low cost and may be easily and quicklyassembled. 1" reover, the air passing through the shell.ttllltlllltllillllhltll ll, that. serial llo. blatt?.

3 will be intensely heated due to its location within the shell section2. .its this shell 3 is preferably concentric with the section 2, allsurltaces ot the shell 3 will be sub jected 'to the exhaust gasespassing through the shell section 2, hence the maximum heat will beobtained. llnasmuch as the diameter ot the shell section 2 is enlargedit will also be readily apparent that the exhaust gases will have a tree4and unobstructed passage around the shell 3, hence bach` pressure willnot be built up on the engine. ll/loreover, the arrangement is such thatthe exhaust gases cannot escape trom the shell section 2 and into thetube 6 which conveys 'the air to the register.

Should the tube r6 worlr loose in the shell section 2, the exhaust gaseswill pass upward ly around the tube to the atmosphere.

ll/'hile it is believed that from the foregoing description the natureand advantages ot my invention are readily apparent, l desire to have itunderstood that ll do not limit myselt to what is herein shown anddescribed and that such changes may be resorted to when desired as tallwithin the scope ot what is claimed.

What l claim as my invention is:

l. a heating apparatus tor an automobile body comprising a tube havingits opposite o ends attachable to an automobile engine exhaust manifoldand exhaust mutlder respectively and provided throughout substantiallyits entire length with a cross sectional area that is slightly largerthan the cross sectional area of an ordinary exhaust Vconduit wherebythe exhaust gases trom an automobile engine may llow into and throughthe tube and be utilized therein as a heating medium, said tube beingimpertorate except tor tour openings, two ot said openings being at oneend ot said tube and constituting inlets 'lor'air and exhaust gasesrespectively, and the other two openings being at the other end ot saidtube and constituting outlet openings tor air and exhaust gasesrespectively, and means open at its opposite ends to the atmosphere forconveying air trom the atmosphere into the tube atoresaid to be heatedby the er1- gine exhaust gases therein, and thence from the tube to theatmosphere within a vehicle body, said means including a tubularconduitv having three sections arranged end to end, the intermediatesection of said conduit being entirely within` and extendinglongitudinally of said tube, and the two other sections constituting afresh air inlet and a hot air outlet respectively for said intermediatesection and extending through the air inlet and'outlet openingsaforesaid in said tube, the inlet section being open at its forward endto receive air from the atmosphere and having the portion thereof withinthe tube extending at a substantially obtuse angle with respect to thelongitudinal median line of said tube so that `the exhaust gases flowingthrough the tube from the engine will be deflected but not materiallyretarded around the intermediate section within said tube to heat theair received therein from the air inlet section, and the outer sectionbeing adapted to receive the heated air from -the intermediate sectionand being open at its outer end whereby said heated air may bedischarged there- -from through a vehicle body register to theatmosphere.

2. A heating apparatus for an automobile body comprising a tubeconstituting a portion of an engine exhaust conduit, and beingimperforate except for four openings, two of said openings being at oneend of said tube and constituting inlets for air and exhaust gasesrespectively, and the other two open-` ings being at the other end ofsaid tube and constituting outlet openings for airfand exhaust gasesrespectively, and means open at its opposite ends to the atmosphere forconveying air from the atmosphere into the tube to be heated by theengineexhaust gases and thence from the tube to the atmosphere within avehicle body,.said means including a tubular conduit having threesections arranged end to end, the intermediate section of saidconduitfbeing entirely within and extending longitudinally of said tube,and

' the two other sections constituting a fresh air inlet and a hotairoutlet respectively for said intermediate section and extendingthroughthe air inlet and outlet openings aforesaid in said tube, theinlet section being open at its forward end to the atmosphere andadapted to convey fresh air from the atmosphere to the intermediatesection within said tube, and the outlet section being adapted toreceive the heated air from the intermediate section and being open atits outer end to the atmosphere whereby such heated air may be`discharged therefrom through a vehicle body register to the atmosphere.

3. A `heating apparatus for an automobile body comprising a tube havingopen portions at its opposite ends attachable to an automobile engineexhaust manifold and exhaust muffler respectively and providedthroughout substantially its entire length'with a cross sectional areathat is slightly larger than the cross sectional area of an ordinaryexhaust conduit whereby the exhaust gases from an automobile engine mayflow into and through the tube and be utilized therein as a heatingmedium', said tube being otherwise imperforate except for two openingsone at each end of said tube, and means open at its opposite ends to theatmosphere for conveying air from the atmosphere into the tube aforesaidto be heated by the engine exhaust gases therein, and thence from thetube to the atmosphere within a vehicle body, said means including atubular conduit having three sections, the intermediate section of saidconduit being entirely'within and extending longitudinally of said tube,and the other sections constituting a fresh air inlet and a hot airoutlet respectively for said intermediate section and extendingthrough/the air inlet and outlet openings aforesaid in said tube, theinlet section being open at its forward end to receive air from theatmosphere and having the portion thereof within a tube extending at asubstantially obtuse angle with respect to the longitudinal medianlineof said tube so that the exhaust gases flowing through the tube fromthe engine will be deflected but not materially retarded around theintermediate section within said tube to heat the air received thereinfrom the air inlet section, and the outlet section being adapted toreceive the heated air from the intermediate section and being open atits outer end whereby said heated air may be discharged therefromthrough a vehicle body register to the atmosphere.

4. A heating apparatus for an automobile body comprising a tubeconstituting a portion of an engine exhaust conduit, and beingimperforate between its ends except for four openings, two of saidopenings being at one end of said tube, and the other two openings beingat the other end of said tube, and means open-at its opposite ends tothe atmosphere for conveying air from the atmosphere into the tube to beheated by the engine exhaust gases and thence from the tube to theatmosphere within a vehicle body, said means including a tubularconduit, having three sections, the intermediate section of said conduitbeing entirely within and extending longitudinally of said tube, and theother sections constituting a fresh air inlet and a hot air outletrespectively for said intermediate section, the inlet section extendingthrough one of said openings at one end of the tube and being open'atits forward end to the atmosphere and adapted to convey fresh air fromthe atmosphere to the intermediate section within said tube, and theoutlet section extending through one of said openings at the other endof the tube and being adfiptd t0 receive the heated air from theintermediate section and being open at its outer end to the atmospherewhereby such heated air may be discharged therefrom through a vehiclebody register to the atmosphere.

In testimony whereof I affix my signature.

.JAMES J. SUNDAY.

